How do you not know you have a nail up your nose? I just heard on the news a man had an MRI which caused a pain in his face. On his way home he coughed up a one inch nail. The MRI must have dislodged it. It was stated the nail had been in his nose for 30 years and that the man never knew it was there or how it got there. My question is, if he didn't know it was there or how it got there, how do they know it was in his nose for 30 years. Just one of those things I wonder about.